I noted that for service identification, it is important to combine the three approaches of top-down, bottom-up, and cross-sectional, goal-model analysis.
我提到了，对于服务鉴别，自顶向下、自底向上和跨部分、目标模型分析三种手段的结合非常重要。
Statistical analysis for cross-sectional area ratios of chord and web members commonly used in steel roof trusses are also provided for reference in predictng fundamental calculation parameters.
对常用钢屋架的弦杆腹杆截面积比值作了统计分析，以便设计者能更准确地确定计算原始参数。
Some analysis on painting surface appearance, phase composition and cross-sectional structure also have been carried out by taking XRD and SEM.
利用XRD和SEM对涂层表面形貌、相组成及断面组织结构进行分析。
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